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750 | victor | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
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4 | ;; Distributed under terms of the GNU General Public License ;; |
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5 | ;; ;; |
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6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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593 | mikedld | 7 | |
465 | serge | 8 | $Revision: 838 $ |
9 | |||
593 | mikedld | 10 | |
465 | serge | 11 | MEM_WB equ 6 ;write-back memory |
12 | MEM_WC equ 1 ;write combined memory |
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13 | MEM_UC equ 0 ;uncached memory |
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14 | |||
15 | |||
16 | align 4 |
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17 | proc init_mem |
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837 | serge | 18 | |
19 | mov ecx, [0x2F0000 + 0x9100] |
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838 | serge | 20 | mov esi, 0x2F0000 + 0x9104 |
837 | serge | 21 | xor eax, eax |
22 | @@: |
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23 | cmp dword [esi+16], 1 |
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24 | jne .next |
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25 | mov edx, [esi+8] |
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26 | cmp eax, [esi+8] |
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27 | ja .next |
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28 | |||
29 | mov eax, [esi+8] |
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30 | .next: |
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31 | add esi, 20 |
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32 | loop @B |
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33 | |||
838 | serge | 34 | and eax, -4096 |
35 | |||
837 | serge | 36 | mov [MEM_AMOUNT-OS_BASE], eax |
465 | serge | 37 | mov [pg_data.mem_amount-OS_BASE], eax |
38 | |||
39 | shr eax, 12 |
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40 | mov edx, eax |
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41 | mov [pg_data.pages_count-OS_BASE], eax |
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42 | shr eax, 3 |
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43 | mov [pg_data.pagemap_size-OS_BASE], eax |
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44 | |||
513 | serge | 45 | add eax, (sys_pgmap-OS_BASE)+4095 |
46 | and eax, not 4095 |
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47 | mov [tmp_page_tabs], eax |
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48 | |||
465 | serge | 49 | cmp edx, (OS_BASE/4096) |
50 | jbe @F |
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51 | mov edx, (OS_BASE/4096) |
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52 | jmp .set |
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53 | @@: |
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54 | cmp edx, (HEAP_MIN_SIZE/4096) |
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55 | jae .set |
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56 | mov edx, (HEAP_MIN_SIZE/4096) |
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57 | .set: |
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58 | mov [pg_data.kernel_pages-OS_BASE], edx |
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59 | shr edx, 10 |
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60 | mov [pg_data.kernel_tables-OS_BASE], edx |
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61 | |||
62 | xor eax, eax |
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63 | mov edi, sys_pgdir-OS_BASE |
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64 | mov ecx, 4096/4 |
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65 | cld |
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66 | rep stosd |
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67 | |||
837 | serge | 68 | mov edx, (sys_pgdir-OS_BASE)+ (OS_BASE shr 20) |
465 | serge | 69 | bt [cpu_caps-OS_BASE], CAPS_PSE |
70 | jnc .no_PSE |
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71 | |||
72 | mov ebx, cr4 |
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73 | or ebx, CR4_PSE |
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74 | mov eax, PG_LARGE+PG_SW |
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75 | mov cr4, ebx |
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513 | serge | 76 | dec [pg_data.kernel_tables-OS_BASE] |
465 | serge | 77 | |
78 | mov [edx], eax |
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79 | add eax, 0x00400000 |
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80 | add edx, 4 |
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81 | |||
82 | mov eax, 0x400000+PG_SW |
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513 | serge | 83 | mov ecx, [tmp_page_tabs] |
84 | sub ecx, 0x400000 |
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85 | shr ecx, 12 ;ecx/=4096 |
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465 | serge | 86 | jmp .map_low |
87 | .no_PSE: |
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88 | mov eax, PG_SW |
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513 | serge | 89 | mov ecx, [tmp_page_tabs] |
90 | shr ecx, 12 |
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465 | serge | 91 | .map_low: |
513 | serge | 92 | mov edi, [tmp_page_tabs] |
465 | serge | 93 | @@: ; |
94 | stosd |
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95 | add eax, 0x1000 |
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96 | dec ecx |
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97 | jnz @B |
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98 | |||
99 | mov ecx, [pg_data.kernel_tables-OS_BASE] |
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100 | shl ecx, 10 |
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101 | xor eax, eax |
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102 | rep stosd |
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103 | |||
104 | mov ecx, [pg_data.kernel_tables-OS_BASE] |
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513 | serge | 105 | mov eax, [tmp_page_tabs] |
106 | or eax, PG_SW |
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465 | serge | 107 | mov edi, edx |
108 | |||
109 | .map_kernel_tabs: |
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110 | |||
111 | stosd |
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112 | add eax, 0x1000 |
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113 | dec ecx |
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114 | jnz .map_kernel_tabs |
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115 | |||
116 | mov dword [sys_pgdir-OS_BASE+(page_tabs shr 20)], sys_pgdir+PG_SW-OS_BASE |
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117 | |||
118 | mov edi, (sys_pgdir-OS_BASE) |
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119 | lea esi, [edi+(OS_BASE shr 20)] |
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519 | serge | 120 | movsd |
121 | movsd |
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465 | serge | 122 | ret |
123 | endp |
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124 | |||
125 | align 4 |
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126 | proc init_page_map |
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127 | |||
128 | mov edi, sys_pgmap-OS_BASE |
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129 | mov ecx, [pg_data.pagemap_size-OS_BASE] |
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130 | shr ecx, 2 |
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513 | serge | 131 | or eax, -1 |
132 | cld |
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465 | serge | 133 | rep stosd |
134 | |||
513 | serge | 135 | mov ecx, [tmp_page_tabs] |
465 | serge | 136 | mov edx, [pg_data.pages_count-OS_BASE] |
513 | serge | 137 | shr ecx, 12 |
138 | add ecx, [pg_data.kernel_tables-OS_BASE] |
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465 | serge | 139 | sub edx, ecx |
140 | mov [pg_data.pages_free-OS_BASE], edx |
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141 | |||
513 | serge | 142 | mov edi, sys_pgmap-OS_BASE |
465 | serge | 143 | mov ebx, ecx |
144 | shr ecx, 5 |
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513 | serge | 145 | xor eax, eax |
465 | serge | 146 | rep stosd |
147 | |||
148 | not eax |
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149 | mov ecx, ebx |
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150 | and ecx, 31 |
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151 | shl eax, cl |
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152 | mov [edi], eax |
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153 | add edi, OS_BASE |
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154 | mov [page_start-OS_BASE], edi; |
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155 | |||
156 | mov ebx, sys_pgmap |
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157 | add ebx, [pg_data.pagemap_size-OS_BASE] |
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158 | mov [page_end-OS_BASE], ebx |
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159 | |||
160 | mov [pg_data.pg_mutex-OS_BASE], 0 |
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161 | ret |
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162 | endp |
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163 | |||
164 | align 4 |
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586 | serge | 165 | |
166 | init_BIOS32: |
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167 | mov edi, 0xE0000 |
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168 | .pcibios_nxt: |
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169 | cmp dword[edi], '_32_' ; "magic" word |
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170 | je .BIOS32_found |
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171 | .pcibios_nxt2: |
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172 | add edi, 0x10 |
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173 | cmp edi, 0xFFFF0 |
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174 | je .BIOS32_not_found |
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175 | jmp .pcibios_nxt |
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176 | .BIOS32_found: ; magic word found, check control summ |
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177 | |||
178 | movzx ecx, byte[edi + 9] |
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179 | shl ecx, 4 |
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180 | mov esi, edi |
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181 | xor eax, eax |
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182 | cld ; paranoia |
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183 | @@: lodsb |
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184 | add ah, al |
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185 | loop @b |
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186 | jnz .pcibios_nxt2 ; control summ must be zero |
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187 | ; BIOS32 service found ! |
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188 | mov ebp, [edi + 4] |
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189 | mov [bios32_entry], ebp |
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190 | ; check PCI BIOS present |
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191 | mov eax, '$PCI' |
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192 | xor ebx, ebx |
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193 | push cs ; special for 'ret far' from BIOS |
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194 | call ebp |
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195 | test al, al |
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196 | jnz .PCI_BIOS32_not_found |
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197 | |||
198 | ; здесь создаются дискрипторы для PCI BIOS |
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199 | |||
200 | add ebx, OS_BASE |
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201 | dec ecx |
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202 | mov [(pci_code_32-OS_BASE)], cx ;limit 0-15 |
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203 | mov [(pci_data_32-OS_BASE)], cx ;limit 0-15 |
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204 | |||
205 | mov [(pci_code_32-OS_BASE)+2], bx ;base 0-15 |
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206 | mov [(pci_data_32-OS_BASE)+2], bx ;base 0-15 |
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207 | |||
208 | shr ebx, 16 |
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209 | mov [(pci_code_32-OS_BASE)+4], bl ;base 16-23 |
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210 | mov [(pci_data_32-OS_BASE)+4], bl ;base 16-23 |
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211 | |||
212 | shr ecx, 16 |
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213 | and cl, 0x0F |
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214 | mov ch, bh |
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215 | add cx, D32 |
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216 | mov [(pci_code_32-OS_BASE)+6], cx ;lim 16-19 & |
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217 | mov [(pci_data_32-OS_BASE)+6], cx ;base 24-31 |
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218 | |||
219 | mov [(pci_bios_entry-OS_BASE)], edx |
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220 | ; jmp .end |
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221 | .PCI_BIOS32_not_found: |
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222 | ; здесь должна заполнятся pci_emu_dat |
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223 | .BIOS32_not_found: |
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224 | .end: |
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837 | serge | 225 | ret |
586 | serge | 226 | |
227 | align 4 |
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465 | serge | 228 | proc test_cpu |
229 | locals |
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230 | cpu_type dd ? |
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231 | cpu_id dd ? |
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232 | cpu_Intel dd ? |
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233 | cpu_AMD dd ? |
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234 | endl |
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235 | |||
236 | mov [cpu_type], 0 |
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237 | xor eax, eax |
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238 | mov [cpu_caps-OS_BASE], eax |
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239 | mov [cpu_caps+4-OS_BASE], eax |
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240 | |||
241 | pushfd |
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242 | pop eax |
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243 | mov ecx, eax |
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244 | xor eax, 0x40000 |
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245 | push eax |
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246 | popfd |
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247 | pushfd |
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248 | pop eax |
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249 | xor eax, ecx |
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250 | mov [cpu_type], CPU_386 |
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251 | jz .end_cpuid |
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252 | push ecx |
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253 | popfd |
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254 | |||
255 | mov [cpu_type], CPU_486 |
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256 | mov eax, ecx |
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257 | xor eax, 0x200000 |
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258 | push eax |
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259 | popfd |
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260 | pushfd |
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261 | pop eax |
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262 | xor eax, ecx |
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263 | je .end_cpuid |
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264 | mov [cpu_id], 1 |
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265 | |||
266 | xor eax, eax |
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267 | cpuid |
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268 | |||
269 | mov [cpu_vendor-OS_BASE], ebx |
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270 | mov [cpu_vendor+4-OS_BASE], edx |
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271 | mov [cpu_vendor+8-OS_BASE], ecx |
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272 | cmp ebx, dword [intel_str-OS_BASE] |
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273 | jne .check_AMD |
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274 | cmp edx, dword [intel_str+4-OS_BASE] |
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275 | jne .check_AMD |
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276 | cmp ecx, dword [intel_str+8-OS_BASE] |
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277 | jne .check_AMD |
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278 | mov [cpu_Intel], 1 |
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279 | cmp eax, 1 |
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280 | jl .end_cpuid |
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281 | mov eax, 1 |
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282 | cpuid |
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283 | mov [cpu_sign-OS_BASE], eax |
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284 | mov [cpu_info-OS_BASE], ebx |
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285 | mov [cpu_caps-OS_BASE], edx |
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286 | mov [cpu_caps+4-OS_BASE],ecx |
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287 | |||
288 | shr eax, 8 |
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289 | and eax, 0x0f |
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290 | ret |
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291 | .end_cpuid: |
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292 | mov eax, [cpu_type] |
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293 | ret |
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294 | |||
295 | .check_AMD: |
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296 | cmp ebx, dword [AMD_str-OS_BASE] |
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297 | jne .unknown |
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298 | cmp edx, dword [AMD_str+4-OS_BASE] |
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299 | jne .unknown |
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300 | cmp ecx, dword [AMD_str+8-OS_BASE] |
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301 | jne .unknown |
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302 | mov [cpu_AMD], 1 |
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303 | cmp eax, 1 |
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304 | jl .unknown |
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305 | mov eax, 1 |
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306 | cpuid |
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307 | mov [cpu_sign-OS_BASE], eax |
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308 | mov [cpu_info-OS_BASE], ebx |
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309 | mov [cpu_caps-OS_BASE], edx |
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310 | mov [cpu_caps+4-OS_BASE],ecx |
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311 | shr eax, 8 |
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312 | and eax, 0x0f |
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313 | ret |
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314 | .unknown: |
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315 | mov eax, 1 |
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316 | cpuid |
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317 | mov [cpu_sign-OS_BASE], eax |
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318 | mov [cpu_info-OS_BASE], ebx |
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319 | mov [cpu_caps-OS_BASE], edx |
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320 | mov [cpu_caps+4-OS_BASE],ecx |
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321 | shr eax, 8 |
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322 | and eax, 0x0f |
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323 | ret |
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324 | endp |
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325 |